CVE-2022-36085
open-policy-agent: Compiler Bypass of WithUnsafeBuiltins using "with" keyword to mock functions
Einstufung nach Quelle
Trivys eigenes Label ist CRITICAL. Kritisch laut NVD. Niedriger laut GHSA (hoch), Red Hat (hoch).
Beschreibung
Open Policy Agent (OPA) is an open source, general-purpose policy engine. The Rego compiler provides a (deprecated) `WithUnsafeBuiltins` function, which allows users to provide a set of built-in functions that should be deemed unsafe — and as such rejected — by the compiler if encountered in the policy compilation stage. A bypass of this protection has been found, where the use of the `with` keyword to mock such a built-in function (a feature introduced in OPA v0.40.0), isn’t taken into account by `WithUnsafeBuiltins`. Multiple conditions need to be met in order to create an adverse effect. Version 0.43.1 contains a patch for this issue. As a workaround, avoid using the `WithUnsafeBuiltins` function and use the `capabilities` feature instead.
Betroffene Pakete und behobene Versionen
| Quelle | Paket | Behoben in |
|---|---|---|
| go::GitHub Security Advisory Go | github.com/open-policy-agent/opa | 0.43.1 |
Referenzen
- https://access.redhat.com/security/cve/CVE-2022-36085
- https://github.com/open-policy-agent/opa
- https://github.com/open-policy-agent/opa/commit/25a597bc3f4985162e7f65f9c36599f4f8f55823
- https://github.com/open-policy-agent/opa/commit/3e8c754ed007b22393cf65e48751ad9f6457fee8
- https://github.com/open-policy-agent/opa/pull/4540
- https://github.com/open-policy-agent/opa/pull/4616
- https://github.com/open-policy-agent/opa/releases/tag/v0.43.1
- https://github.com/open-policy-agent/opa/security/advisories/GHSA-f524-rf33-2jjr